The Collaborative International Dictionary of English v.0.48:

Undirected \Un`di*rect"ed\, a. [In senses 1 and 2, pref. un- not
   + directed; in sense 3 properly p. p. of undirect.]
   1. Not directed; not guided; left without direction.
      [1913 Webster]

   2. Not addressed; not superscribed, as a letter.
      [1913 Webster]

   3. Misdirected; misled; led astray. [R.]
      [1913 Webster]

WordNet (r) 3.0 (2006):

undirected
    adj 1: aimlessly drifting [syn: adrift(p), afloat(p),
           aimless, directionless, planless, rudderless,
           undirected]